Massaging chair with an adjustable back support

Abstract

A massaging chair includes a base frame supported on a wheeled support, a back support pivoted about a pivot on a mounting frame the at bottom of the base frame, a crank lever controlled lock device controlled to lock the back support in any of a series of sloping positions, elastic members connected between the back support and the mounting frame. The elastic members are stretched when the back support is released from the lock device and turned backward. A retractable supporting bar is fastened to the back support by a lock screw, and a back rest on the back support is vertically pivoted to the retractable supporting bar. A plurality of brackets are horizontally pivoted to the back rest at different elevations to hold rotating massaging wheels.

What is claimed is: 
     
       1. A massaging chair, comprising: a base frame to hold a seat for sitting;   a mounting frame fastened to said base frame beneath said seat, said mounting frame including a pivot near a front end thereof and a cross rod near a rear end thereof;   a back support having a bottom end pivoted about the pivot on said mounting frame and a top end, said back support including a sector plate near the bottom end thereof, the sector plate having a series of retaining notches, the back support further including a cross rod in a middle portion thereof, and a plurality of rotating massaging wheels horizontally mounted thereon near the top end thereof;   lock means controlled to lock said back support in position, said lock means including a crank lever, a forked member welded to said crank lever, a locating rod transversely fastened to said forked member and movable to engage into one of the retaining notches on said sector plate of said back support;   linking means connected between the cross rod on said back support and the cross rod on said mounting frame, said linking means being able to return to a former shape after being pulled;   a retractable supporting bar fastened to said back support at the top end thereof and locked in position by a lock screw, said retractable supporting bar including a top, wherein a pivot is provided at the top; and   a back rest including a pivot hole defined in a middle portion thereof, said back rest pivoted about the pivot on said retractable supporting bar, two transverse bars horizontally disposed at two opposite ends of the back rest, a plurality of mounting lugs respectively fastened to the transverse bars of said back rest, and a plurality of brackets turnable about a respective pivot on each mounting lug, each of said brackets provided to hold a respective rotating massaging wheel; and   wherein said back support can be released from said lock means and turned about the pivot on said mounting frame to stretch said linking means.   
     
     
       2. The massaging chair of claim 1 wherein said back rest is turnable about the pivot on said retractable supporting bar in the vertical direction; and each bracket of the back rest is respectively turnable about the respective pivot in the horizontal direction. 
     
     
       3. The massaging chair of claim 1 further comprising a wheeled support fastened to said mounting frame to make the massaging chair easy to move. 
     
     
       4. The massaging chair of claim 1 wherein said linking means is made of rubber. 
     
     
       5. The massaging chair of claim 1 wherein said linking means is an elastic member. 
     
     
       6. A massaging chair, comprising: a base frame for holding a seat;   a mounting frame fastened to the base frame beneath the seat, the mounting frame including a pivot proximate a first end thereof and a cross rod proximate a second end thereof;   a back support having a top end and a bottom end, wherein the bottom end is pivotally mounted to the pivot of the mounting frame, said back support including a sector plate proximate the bottom end thereof, the sector plate having a retaining notch, the back support further including a cross rod in a middle portion thereof;   lock means for locking the back support at a predetermined position, the lock means including a crank lever, a forked member connected to the crank lever, a locating rod fastened to the forked member and movable to engage into the retaining notch of the sector plate of the back support;   linking means connected between the cross rod of the back support and the cross rod of the mounting frame, the linking means being able to return to an original position after being pulled;   a retractable supporting bar fastened to the back support at the top end thereof and lockable into position by a lock screw, the retractable supporting bar including a top portion wherein a pivot is provided at the top portion; and   a back rest including a pivot hole defined in a middle portion thereof, wherein the back rest is pivotally mounted about the pivot of the retractable supporting bar, wherein two transverse bars are disposed proximate two opposite ends of the back rest, wherein each transverse bar includes a mounting lug fastened thereto, and a bracket is pivotally mounted about a pivot of the mounting lug, wherein the bracket holds a rotatable massaging wheel; and   wherein the back support is releasable from the lock means and movable about the pivot of the mounting frame to stretch the linking means.   
     
     
       7. The massaging chair of claim 6, further including a wheeled support fastened to the mounting frame. 
     
     
       8. The massaging chair of claim 6, wherein the linking means is made of rubber. 
     
     
       9. The massaging chair of claim 6, wherein the linking means is an elastic member. 
     
     
       10. The massaging chair of claim 9, wherein two elastic members are provided as the linking means.